Table 5. Fecal levels of putrefactive products and organic acids in cats.

TS	pH	Putrefactive product (µg/g)					Organic acid (mg/g)a
		Phenol	p-Cresol	Indole	Skatole	Acetic acid	Propionic acid	n-Butyric acid	Iso-valeric acid	n-Valeric acid
Control group
c-1 pre	5.68	9.9	13.8	0.9	0.5	6.25	5.21	2.29	0.29	1.80
c-2 pre	5.47	5.7	45.1	0.5	3.0	5.53	4.04	1.26	0.24	1.35
c-3 pre	5.64	8.2	8.4	2.1	3.1	5.37	3.91	1.82	0.00	0.84
c-1 post	5.57	12.1	34.2	0.5	1.2	8.49	5.76	2.57	0.32	2.04
c-2 post	5.65	2.5	106.9	0.5	13.0	4.66	2.50	1.43	0.43	1.56
c-3 post	5.75	6.3	21.0	0.6	27.9	4.98	3.32	1.00	0.12	0.54
Test group
t-1 pre	5.57*	12.1	34.2	0.5	1.2	8.49	5.76	2.57	0.32	2.04
t-2 pre*	5.65*	2.5	106.9	0.5	13.0	4.66	2.50	1.43	0.43	1.56
t-3 pre	5.75*	6.3	21.0	0.6	27.9	4.98	3.32	1.00	0.12	0.54
t-1 post	5.38*	12.1	59.0	6.5	26.3	5.57	4.49	2.88b	0.53b	1.88
t-2 post*	5.41*	5.3	59.7b	0.4b	2.9b	4.97b	3.67b	1.39	0.30	1.49
t-3 post	5.55*	8.2	24.7	2.0	21.4b	5.99b	3.92b	1.08b	0.20b	0.64b

TS, test subject; SV, standard value; c, Control group; t, Test group; pre-test, pre-test; post-test, post-test.

^*A significant difference was evident between pre and post (p < 0.01).

^aLactic acid level below the detection limit;

^bIncreased levels of items.